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A collapsed drain can stop wastewater from flowing properly and may lead to repeated blockages, bad smells, slow drainage, standing water or wastewater backing up. In some cases, the problem is obvious, but in others it can look like an ordinary blockage until the pipework is inspected.
Drain Division helps investigate collapsed drains for domestic and commercial properties. Our engineers can assess the symptoms, inspect the drainage system and advise whether the pipework is collapsed, badly displaced, cracked or affected by another fault.
Collapsed drains are often found after repeated blocked drain problems, blocked outside drains, root ingress or emergency drainage callouts. A CCTV drain survey is often the most useful way to confirm what is happening inside the pipework.
Common Signs of a Collapsed Drain
You may have a collapsed drain if you notice:
A suspected collapsed drain should be investigated properly before repair work is planned, as the best solution depends on the location and condition of the pipework.
Drains can collapse when the pipework becomes too damaged, weakened or displaced to support normal flow. Some collapsed drains develop gradually, while others become noticeable after a blockage or heavy rainfall.
Common causes of collapsed drains include:
If roots have entered the system, root ingress removal may clear the immediate obstruction, but further repair may still be needed if the pipe has collapsed or become badly displaced.
The right approach depends on whether the drain is fully collapsed, partly collapsed, cracked, displaced or blocked by material caught around a damaged section. A collapsed drain should usually be inspected before deciding on the repair method.
Collapsed drain work may include:
Where the pipework is damaged but still suitable for internal repair, drain relining may be considered. Where the drain has fully collapsed or lost shape, more direct drain repairs or replacement may be needed.
Collapsed drains are often linked to recurring blockages, root ingress, damaged pipework and urgent drainage problems.
You may also need:
Drain Division provides collapsed drain investigation and repair advice across many areas, including Aldershot, Basingstoke, Guildford, Reading, Southampton and Winchester.
How do I know if my drain has collapsed or is just blocked?
A normal blockage may clear and stay clear. A collapsed drain is more likely if the same drain keeps blocking, water drains slowly again soon after clearance, wastewater backs up, or there are wet or sunken areas above the drainage run. A CCTV drain survey is usually the clearest way to confirm the difference.
Should I ask to see CCTV footage before agreeing to collapsed drain repairs?
Yes, it is sensible to understand what has been found. CCTV footage can help show whether the pipe is collapsed, cracked, displaced, affected by roots or blocked by debris. It also helps explain why a particular repair method has been recommended.
Can a collapsed drain be fixed without digging?
Sometimes, but not always. No-dig methods such as drain relining may be suitable if the pipe still has enough shape and structure. If the drain has fully collapsed or the pipe has lost its form, excavation and replacement may be needed.
Is repeated jetting enough for a collapsed drain?
Jetting may clear waste and debris temporarily, but it will not repair a collapsed or badly damaged pipe. If the same section keeps blocking after clearance, the underlying defect should be investigated rather than relying on repeated unblocking.
Can tree roots cause a drain to collapse?
Tree roots can enter through cracks, open joints or weakened sections of pipework. Over time, root growth can restrict flow, trap waste and make existing pipe damage worse. Root removal may clear the immediate obstruction, but the damaged section may still need repair.
How urgent is a collapsed drain?
It depends on the symptoms. If wastewater is backing up, toilets cannot be used, outside drains are overflowing or water is affecting the property, it should be treated as urgent. If the issue is recurring but not currently overflowing, it should still be inspected before it gets worse.
Will insurance cover a collapsed drain?
Insurance cover depends on the policy, the cause of the damage and the evidence available. CCTV footage, photos, written findings and repair quotes may be useful if you need to speak to your insurer. Drain Division cannot confirm cover, but we can help identify the drainage issue itself.
Contact our team of experts today. Our offices are open 6am to midnight 7 days a week.
